Explore the iconic Colorado landmarks that you must visit. From breathtaking mountains to historic sites, discover the beauty ...

GRAND CANYON NATIONAL PARK, Ariz.— Tribes, conservation organizations and community groups today defended Baaj Nwaavjo I’tah ...

With 28 National parks in California, you can truly find something for everyone to see and enjoy. California National Pa ...

With 22 national parks and monuments to its name, Arizona boasts some of the most astonishing landscapes in the country, from the Grand Canyon to the towering buttes of Monument ...

Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object ...

Scientists proposed an explanation for the formation of Vallis Schrödinger and Vallis Planck near the lunar south pole, which ...

New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...

The proposed Tusayan development would build a giant mega-resort that threatens groundwater just outside Grand Canyon ...

The Earth's Grand Canyon took millions of years to carve, but the moon's grand canyons took about ten minutes.

Two gargantuan canyons on the moon were carved by a hailstorm of rocks — and that’s good news for future lunar astronauts.

The National Park Service opened a lottery for extended self-guided rafting trips along the Colorado River in Grand Canyon ...

The Grand Canyon ... national monuments is how they are designated. Congress designates national parks, and the president can designate national monuments through presidential proclamation. Many ...